Scope and Contents Page 18a: Two Greyscale Photos [10/15/73] View of workmen cleaning rhyolite in bottom of Cutoff Trench. [10/15/73] Bottom of cutoff trench and right abutment, wall at approximately Station 17+75, 150 feet upstream to 100 feet upstream from centerline of dam. Page 18b: Two Greyscale Photos [10/31/73] View of laborer cleaning up in rock along grout cap at Station 17+55, 100 feet upstream from centerline of dam. [11/1/73] View of laborer compacting Zone 1 material along right abutment with...

Scope and Contents

Page 19a: Two Greyscale Photos [10/16/73] View of bottom of cutoff trench station 18+00 to 17+75. [2/14/74] View of keyway trench open rock joint at station 4+16, downstream side of keyway, elevation 5256.0. Page 19b: Two Greyscale Photos [2/14/74] View of keyway trench open rock joint, looking inside hole at station 4+45, upstream setting, 2 feet inside looking into hole. [2/14/74] View of keyway trench open rock joint at station 3+45, showing downstream side of keyway.

Scope and Contents Page 20a: Two Greyscale Photos [2/27/74] View of centerline of grout cap and rock cavity on upstream side of keyway trench at station 3+55. [4/3/74] View of cleanup on bench below conveyor-tower, station 16+50 to 17+50. Page 20b: Two Greyscale Photos [4/4/74] View of contractor placing zone 1 material on bench at bottom of conveyor tower, station 16+50 to 17+50, centerline of dam to 200 feet upstream from centerline of dam. [4/5/74] View of zone 1 material compacted on bench below conveyor...

Scope and Contents

Page 21a: Two Greyscale Photos [4/8/74] View of compacting of zone 1 material on bench below conveyor tower with sheepfoot roller. [3/27/74] From 22+00, centerline grout cap looking at right abutment being cleaned off by labor crew. Page 21b: Two Greyscale Photos [4/25/74] View of final cleanup in keyway trench, station 3+00 to 4+50. [7/2/74] Hydraulic hammer used for special compactor along abutment and around tower supports.

Scope and Contents Page 22a: Two Greyscale Photos [7/9/74] Crew cleaning up on walls of cutoff trench right abutment about station 4+75, downstream side. [7/24/74] View of right abutment facing station 15+00, 100 to 250 feet upstream showing loose rock on face. Page 22b: Two Greyscale Photos [7/25/74] View of tower at 9 a.m. on 7/25/74 showing damage to leg caused by Scraper #641 hitting it at approximately 2:30 a.m. on 7/25/74 graveyard shift. [7/11/74] Right abutment, elevation 5045 to elevation 5090,...

Scope and Contents

Page 23a: Two Greyscale Photos [8/13/74] View of right key trench showing cleanup completed by contractor. [8/16/74] View of rock face 200 feet upstream to 300 feet upstream showing abutment cleanup, right abutment. Page 23b: Two Greyscale Photos [8/16/74] View of rock face 300 feet to 400 feet upstream showing right abutment cleanup. [8/26/74] Right abutment keyway showing drill track on the grout cap and access starway on the upstream side.

Scope and Contents

Page 24a: Two Greyscale Photos [9/12/74] Void located at elevation 5085 on the left abutment 250 feet upstream of centerline. [10/11/74] Dam embankment from left abutment opposite of power-pumping plant. Page 24b: Two Greyscale Photos [10/11/74] Right abutment showing rock 260 to 300 feet upstream of centerline. [10/6/74] View of crack that required backfilling with grout, 250 feet upstream of centerline on left abutment, elevation 5106.

Scope and Contents

Page 25a: Two Greyscale Photos [11/14/74] View of open joints on the right abutment at elevation 5133, station 15+30, 250 feet upstream. [11/15/74] A void in the right abutment to be grouted at elevation 5140, 250 feet upstream, station 15+30. Page 25b: Two Greyscale Photos [11/14/74] View of open joint on the right abutment at elevation 5142, station 14+52, 90 feet upstream ready to be grouted. [4/10/75] Grout Cap - Station 10+25 showing close up of open joint in rock.

Scope and Contents Page 26a: Two Greyscale Photos [5/27/75] View of D-8 cat tractor with scarifier. [5/27/75] Left abutment zone 1 - Labor using a hand-held air driver compactor to compact zone 1 material up to rock face of downstream left abutment. Page 26b: Two Greyscale Photos [5/29/75] Euclid end dump loaded with rock and earth being used for special compaction on zone 1 material next to rock face of the right abutment. [6/13/75] Right abutment key trench showing D-9 Cat dozer with sheep foot roller and...

Scope and Contents Page 27a: Two Greyscale Photos [5/8/75] Downstream right abutment and zone 1 showing workmen cleaning up the abutment for 1 material. [6/16/75] Right keyway station 4+20 showing caves in downstream wall bring back filled with concrete using crane and 2 cu. yd. bucket. Page 27b: Two Greyscale Photos [7/17/75] View of the right abutment key trench, station 8+50, looking towards auxiliary outlet works tunnel access shaft and spillway inlet. [7/9/75] Right abutment keyway trench being backfilled...